fixed resutl character causing Wiki posting error; minor typo fixes

Change-Id: I1d2eaaf839a1787a82e5f30e14ec547d104b647d
diff --git a/TestON/tests/PLATdockertest/PLATdockertest.py b/TestON/tests/PLATdockertest/PLATdockertest.py
index f62998b..03274e2 100644
--- a/TestON/tests/PLATdockertest/PLATdockertest.py
+++ b/TestON/tests/PLATdockertest/PLATdockertest.py
@@ -230,7 +230,7 @@
 
         #main.step( "remove exiting onosproject/onos images")
         #stepResult = main.ONOSbenchDocker.dockerRemoveImage( image = DOCKERREPO + ":" + DOCKERTAG )
-        main.step( "remove exiting '<none>:<none>' images")
+        main.step( "remove exiting 'none:none' images")
         stepResult = main.ONOSbenchDocker.dockerRemoveImage( image = "<none>:<none>" )
         utilities.assert_equals( expect = main.TRUE, actual = stepResult,
                                     onpass = "Succeeded in deleting image " + "<none>:<none>",